For some crimes you'd probably be able to drastically lower penalties. If there's a 100% chance a shoplifter is going to get caught when they leave the store, t

For some crimes you'd probably be able to drastically lower penalties. If there's a 100% chance a shoplifter is going to get caught when they leave the store, then just making them return the stolen goods would be enough. Harsh penalties are partly the result of an inability to apprehend people (using the fear of harsh penalties to compensate for the low chance of being caught). It also seems likely that more surveillance will result in fewer innocent people convicted, not more. Anecdotally, every case I've read about that had video surveillance and involved innocent people were arrested, the video surveillance ended up being what exonerated them.